Tamiya 70241 Fun Sponge Tires STEM Kit - Creative Mini 4WD Add-on  [70241]

Bring more motion to STEM builds with Tamiya 70241 Fun Sponge Tires

The Tamiya 70241 Fun Sponge Tires set gives classroom projects and hobby benches a simple way to explore motion and mechanics. Made for experimentation, these sponge tyres let builders test how shape and softness affect movement, making them a practical tool for learning and play.

Varied sponge shapes for hands-on tests

The kit includes multiple blue sponge profiles including circular, cross-shaped and apostrophe-shaped pieces. Each form produces different behavior: the cross shape helps climb small obstacles, while the apostrophe shape creates a stop-start, rhythmic motion. These distinct motions help visualise mechanical concepts during trials and demos.

Fits large-diameter Mini 4WD wheels and adjusts easily

Designed to pair with large-diameter Mini 4WD car wheels, these sponge tyres can be tuned with optional cut-away sections in the sidewalls to soften the contact. That lets builders tailor grip and responsiveness to suit ramps, ramps with bumps or smooth tracks.

Contents included in the kit

• Sponge Tire Sheet (160mm x 105mm)
• Yellow Wheels x4
• 3x100mm Hex Shaft x1
• Double-Sided Tape x4 sheets